Valve-actuating mechanism.



J. A. JOHNSON. vALvE AcTuATlNG MEcHANlsM.

APPLICATION FILED JULY 28| 1914.

Patented July 20, 1915.

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iiNiran srarns; learn JOHN A. JOHNSON, oF cRAWFoRDsv'I'LLE, iNDiaN-A, AssiGNoRo To .ioiiNsoN AGETY- orrica LENE GAS COMPANY, OF CRAWFORDSVILLEf INDIANA, A CORPORATION. l

vALvE-AcTUATiNG iviuciiaivsivi.'

Actuating Mechanism, of which the followingis a specification.

This invention relates to certainl actuating mechanism for. actuating that type of a valve for discharging carbid froln the carbid-receptacles into the generating chambers of acetylene gas generators which contemplates the use of two valves operated by a single valve-stein in which the movement of one valve, in a given direction, is at vari'- ance with the movement yof the other valve.

The object of the invention consists in the provision of a simplified construction of actuating valve mechanism for actuating a multiple of valves for controlling the discharge of carbid from carbid-.receptacles into the generating chambers of acetylene gas generators.

A further object of the invention consists in the provision of a valve actuating mechanism for actuating a multiple of valves for controlling the discharge of carbid from carbid-receptacles into the generating chambers of acetylene gas generators which is'- cheap to manufacture, durable and eflicient in its operation. c

I accomplish the object of the invention by means of the construction illustratedA in the accompanying drawings, forming a part hereof, in which- Figure 1 is a central vertical section through a carbid-receptacle for temporarily storing carbid in acetylene gas generators, showing my invention in operative position.

Fig. 2 is an underside plan view of the memf pending annular flange 15 which projects into the cylinder 10. The bottom 11 and Specification of Letters Patent. Application'alea July as, 1914. y serial No. ssasac.

' Patented July 20,1915;

topy 141-'Y rareheld inposition in the cylinder bym'eans of a pair of bolts 16.- Access is gained to the interior of the carbid-receptacle throughy theiopenings'lSfwhich are normally closed bythe lids 19 which are hinged to the top 14.

l `'Ihedischarge vopening 12 is normally closed by means of a valve 2O which is secured to the end .of the valve-stem 21, the latter extending vertically and centrally within the interior of the carbid-receptacle. The` upper .end of the valve-stem 21 is threadedto yreceive athulnb-.nut 22, and the valve-stem `and valve are lifted in a vertical direction away fromthe discharge opening 12 by means of a pair of opposed levers 23 which engage the underside of the thumbnut 22. The ends of the levers 23 are arranged' on .opposite sides of the valve-stem 21.50 that the-force is equally applied to the Vopposite sides of the thumb-nut 22 when the Thefouter ends of the levers 23 engage :the ycurved ends of a hanger 30, the latter being provided on its top and at the center with a verticalpin` 31 which projects eXteriorly of the carbid-receptacle through an opening 32 in the top 14.

The valve` 20 is unseated when the gas has been reduced within the gas bell (not shown) to such a point where it is desirable to increase the supply of gas, and this may be accomplished by any suitable means moving with the gas Vbell to engage the upper end of the vertical pin 31, causing said pin to be depressed. Vith the downward movement of the pin 31 a like movement is imparted to the hanger 30, which movement is imparted to the outer ends of the levers 23, causing the inner ends of the levers to be elevated and carrying the valve-stem 21 and valve 20 upwardly, leaving the discharge opening 12 exposed; By means of the thumb-nut 22 lostl motion between the levers 23 and valve 2O may be taken up and the amount of throw or travel accorded said valve may be regulated. Surrounding the valve 20 and the valve-stem 21, immediately above the valve 20, vis a .second valve 35 which is normally held into contact with the interior surface of the conical bottom 11 by gravity. This valve,protects the valve 20 against any interference in its action by lumps of carbid. It will be noted that the bottom of valve 35 is depressed, leaving a sharp cutting-edge around its lower end to disintegrate lumps of carbid that may engage its lower cutting-edge. By this construction the valve 35 breaks the immediate lumps of carbid into minute particles, and as the valve 35 is seated in advance of the valve 20 these smaller particles of carbid beneath said valve 35 will flow out beneath the oncoming end of the valve 2() through the discharge opening 12, leaving the bottom 11 beneath the valve 35 clear so as to insure proper seating of the valve 20 at all times. rlhe act of disintegrating the lumps of carbid coming into contact with the lower edge of the valve 35 is made more certain by forming the valve of iron, thus greatly increasing its weight. lit will be noted that the valve 35 is seated before the valve 20 so that the flow of carbid is cut off and the carbid that has passed beneath the valve 35 will be discharged through the discharge opening 12 before the valve 2O is seated. `When the valve-stem 21 is lifted the valve 20 is unseated before it engages and lifts the valve 35. To prevent the carbid within the carbid-receptacle from impinging and interfering with the vertical movement o the valves 20 and 35 and the valve-stem 21 they are protected by a hood 10 and a hollow tube 41 which surrounds these parts. The lower edge of the hood 40, where it con- Copies of this patent may be obtained for five cents said opening,

tacts the bottom 11, is provided with a plurality of notches 42 which form passageways for the passage of the carbid to the discharge opening 1-2.

I claim:

1. The combination, with a carbid holding receptacle having a carbid discharge opening7 of a valve for normally sealing a valve-stem for moving said valve from said opening, a pair of centrally pivoted levers arranged on opposite sides of said valve-stem for applying a uniform lifting force to the latter, and a single means for connecting the outer ends of said levers and for uniformly actuating said levers.

2. The combination, with a carbid holding receptacle having a discharge opening, of a valve for normally sealing said opening, a valve-stem for moving said valve away from said opening, a pair of centrally pivoted levers arranged on opposite sides of said valve-stem for applying a uniform lifting force to the latter, a single means for connecting the outer ends of the levers and for uniformly actuating said levers, and a nut threaded upon the upper end of said valve-stem for regulating the travel of said valve.

In witness whereof, l have hereunto set my hand and seal at Orawfordsville, lndiana, this 23rd day of July, A. D. one thousand nine hundred and fourteen.

JOHN A. JOHNSON.

each, by addressing the Commissioner of Patents.

Washington, D. C. 

